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A. E. CAMERON AND R. S. RILEY. ruaummc REGULATOR run meme GOVERNORS. APPLICATION FILED SEPT. 3. I915.

1,31 7,955. Patented Oct. 7, 1919.

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A. E. CAMERON AND R. S. RILEY.

PNEUMATIC REGULATOR FOR ENGINE GOVERNORS.

nrrucmou mm SEPT. a. 1915.

1,317,955. Patented 001.7,1919.

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To all whom it"may concern:

Be it known that We, ALEXANDER E. GAM- noN and Roxanna SANFORD RILEY citizens of the United States, residin' at Providence, county of Providence, tate, of il'fthode Ielanghand Worcester, county of Worcester, Sta e of Ma s hus r p ti y, b invented a new and useful Pneumatic Reg}:- lator for Engine-Governors, of which is e fqlle ng is e sp c fic tion- The principal ebject of this invention is to pre icle. a simple and n en means f0; cqntrolling the s ogf an en fne d r iving a mechanic l at s '59, a w P PQ the spee at the s b d t th m of the air independent y il pp m, e t stoker, and especially to pnovide an unproxsd mechan sm b which gm ra the ai is ass d t eet ete a e ra g 21 586;? means fig;- 'va 11g the speecl of the en ne w thset efi eiii g th ces r t ee by the QYQIQ1 b t n t Ker c gee. Q fie ieveatien Is to p vi 6 me ns. z.y Win h th c ntrol of the s H .d will resp nd e np r t slowl to c ifigss' n an pre u s s. the e S B s th en f e w l net. h ch nge m ts je y 1f there is e su iien inc e s Q de ease in the a r mssm'e am; h eogmel m e mm ia e ynesteredt Thi has t e effect eipxeventiag excessive. pse s #1 1! t pres ur se s an mmeeen i ine-nee i te belie he is e qqmpanyin drawings m hie-he? ijgere 1. 1;} ide heap; e qee ro lm d vice es sndm t th zuentie a be wages nc he We ss s tnea them; we

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p p {a hetl m theme? ass p e iaterier i rl e i ,r se e1?- A Tlils Pipe l Q 1I EP 9. with. a fewer. e/Ply e e ker with hwmfs esi s" se ,t t Qu .stel er V1.11 e

s e s that int e s1 se ssqeee .v 8311 he useef flin B gOVgIIOIi'LQQQll EO ,t a 1L e e i with i w pteel 1,0 an g 'r ce te le P 1119 1 is ne e12 up as ism e s 1. 1; be te an closed top, w ll ie .1 e ste d, o

into i course, that the upper end of the pi e 11 extencls up into the air space within 1; e receptacle 12 above the liquid seal and consequently the height of this receptacle 12 will Vary according to the pressure of air Within. This pipe 11 is connected to individual Stoker wind boxes in case of individual eontnel 01 each stoken, on to a main air duct in case several stekers are driven from the same engine.

Between the two reee tacles is a liquid seal, as indicated, which is preferably formed of a kind of thick oil whieh will not eva rate rapidly. This thick oil, on account of its viscosity, has the advantage of responding slowly to changes in air pressuee. The fore, it. an iihportant feature because it prevents excessiite speeds being suddenly Fer t e purpose of ecnnecting this controller with the engine, we provide a rock 5 aft 1,8 having thiee arms 14, 15 and 16. e arm 14 is'pivotally connected directly with the top of the inner receptacle 1?. The arin 1 5 is located at an inclination when the H is in horizontal position, and on its end i's'hung a weight 17. On account ef the inelination of this a m, the horizontal distance from the center of the weight 1 7 to the center of the rock shaft 13 increases as the arm I i rises a normal horizontal ition. That is, the monientcaused by the eight will be increased as the inner cylinder rises. When the air pressure within in creases the l ner cylinder rises until this n omen is su ci elnt to-Balanee anal stop the of the inner' recegtacle. The normal an is are arm 15 to t e horizontal and'the a mint 6 weight attached to it refie ehly afiaa e eiee e p r m t,

in r P v Llhethlf arm 16, which nor ally is substantially i e itihal is connects by a substantial y horizontal rod 20 with an arm 21 ion or se em 22.

.e 7e meshes w a elt of a hall ranger for the engine governor. The ball ranger, is well known in this art, is a means for Varging the length of the connection between t e governor balls and the valve to control the position of the valve. This rack is fixed to the valve rod 24, the raising of whicl tends to open the valve wider to increase t 9 admission of steam to the engine. The bell crank formed by the arm 21 and pinion 22 is supported by a pivot or fulcrum 28 on a floatin fulcrum carrying member 25 which norma y rises and falls on a collar 26 on which it rests and which is not'fixed to the rod 24 except through the fulcrum carrying member 25. The governor balls 27 are connected with the collar 26 as usual so that when they rise they allow the collar and therefore the fulcrum carryin member to descend and thus tend to close t is admission valve. As the arm 21 does not swing unless the air pressure changes, the governor balls have the usual full control over the engine throttle. lVe do not claim the construction of this ball ranger, as its details do not con stitute a part of this invention, and we are aware of the fact that any other means for regulatin the opening of the admission valve con (1 be connected with our controlling device within the scope of this invention as expressed in the claims. y I

The operation of the device is thought to be obvious. When, on account of low steam pressure, the air pressure supply of the Stoker increases, it tends to raise the cylinder 12, which also raises the weight 17 until such time as its moment about the shaft 13 is sufficient to balance the increased buoy ancy of the cylinder 12." This moves the arm 16 to the right and the arm 21 cos with it, thus raising the rack 23 and the rod 24. The efi'ect of this is simply to takea certain amount of weight oif the governor ball arms, but it will be understood that these balls are free to act to rise and fall and that they continue to dovso and thus tend to keepthe-s eed constant at the new rate provided by t e adjustment described. In this way thespeedof the engine varies directly-with the. air pressure, irrespective of the load on the engine. This is to be distinguished from any arrangement in which the throttle valve mi ht be operated directly by the air pressure ecause 1n that case only the amount of steam going to the engine would be controlled and that would not necessarily control the speed because of the variable resistance encountered bythe.

engine when driving an automatic stoker. It will be seen, therefore, that the ball ranger bell crankreally controls the speed at which the engine is allowed. to berun because it determines the position of the governor valve relative to that of the governor balls and re laces any. ordinary speed adjustment of to governor. That is, it

serves as a governor adjusting device. Moreover, the governor balls are still there to change the governor valve according to various speeds which may be determined by the various positions of the ball ranger bell crank. In this way the speed of the coal feed is proportioned directly to the Jressure of air supplied to the stokcrs. evertheless, the device responds comparatively slowly to the changes in air pressure, and consequently excessive speeds are not attained when the air pressure rises momentarily.

Although we have illustrated and described only a single embodiment of the invention and shown it as connected with a particular type of governor and governor adjustin device, we are aware of the fact that mo ifications in the contruction and arrangement of the controlling device can be made by any person skilled in the art and that it can be applied to other types of governors and governor adjusters, and that it can be applied directly to a rheostat for governing the speed of a motor without departing from the S00 e of this invention as expressed in the claims. Therefore, we do not wish to be limited in these respects, but what we do claim is 1. The combination of the ball ranger of an engine governor, with an open topped receptacle, an open bottom receptacle therein, said receptacles having a liquid seal between them, means for introducing air under pressure into the space within the inner receptacle above the liquid seal, and means connected with and operated by said receptacles, in proportion to the degree of pressure of the air within, for operating said ball ranger to increase the speed at which the engine is to be allowed to run by the ball ranger and overnor, as the air pressure rises, irrespective of the load on the engine, and leaving the governor free thereafter to maintain the speed constant.

2. In a device for regulating the speed of an engine for driving a mechanical Stoker, the combination with the valve rod of the engine and a governor for oplerating said rod, of means connected with t e air supply to the stoker for ad'usting the governor for, increasing the spee of the engine upon an increase In the pressure of the air in said supply, said means comprising retarding means so as to act on the governor only after the pressure has risen materially, said govgernor being connected with the rod so as to retain its control over the engine both before and after adjustment, whereby it will tenddto keep the speedconstant at the' new spec 3. In a devicefor regulating the speed of an engine for drivin a mac anlcal Stoker in: proportion to the pressure of the air supplied to the Stoker, the combination cf a stationary receptacle and a movable receptacle telescoping together, means for introducing air pressure from the stoker into the space between said receptacles, a liquid seal between said receptacles, a rock shaft, a normally horizontal arm connected with the movable receptacle and fixed to the rock shaft, a normally inclined arm fixed to the rock shaft and having a weight thereon whereby as the movable receptacle rises, the second arm will move toward horizontal position and the efi'ect of its weight will be increased, a third arm on the rock shaft, and a governor adjusting device connected with said third arm and operated thereby.

4. In a device for regulating the speed of an engine for driving a mechanical stoker in proportion to the pressure of the air supplied to the Stoker, the combination of two telescoping rece tacles having a liquid seal, means for lntro ucing air pressure from the movable receptacles arit rises 1t will become device connected with the movable receptacle and operated thereby. 80

In testimony whereof we hereunto set our hands, in the presence of the subscribing Witnesses.

ALEXANDER E. CAMERON. ROBERT S. RILEY.

Witnesses as to Alexander E. Cameron:

J AMES H. MCELBOY, CHAs. D. UAsEY. Witnesses as to Robert S. Riley:

I. A. TAmn, F. W. GILMAN.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0." 

